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en-usPhys.org provides the latest news on nanotechnology, nanoscience, nanoelectronics, science and technology. Updated Daily.Researchers create first superatomic 2-D semiconductorAtoms are the basic building blocks of all matter—at least, that is the conventional picture. In a new study, researchers have fabricated the first superatomic 2-D semiconductor, a material whose basic units aren't atoms but superatoms—atomic clusters that exhibit some of the properties of one or more individual atoms. The researchers expect that the new material is just the first member of what will become a new family of 2-D semiconductors whose superatomic structures will greatly expand the diversity, functionality, and applications of 2-D materials.https://phys.org/news/2018-02-superatomic-d-semiconductor.html
Nanophysics Fri, 16 Feb 2018 09:30:02 ESTnews437970688To untangle the effects of nanoparticles on microbes, look at the genesThe environment is teeming with microbes. Soil, water, indoor surfaces, our own bodies—any habitat that hasn't been rigorously sterilized is populated by thousands of species of interdependent bacteria, viruses, and other microscopic organisms.https://phys.org/news/2018-02-untangle-effects-nanoparticles-microbes-genes.html
Bio & Medicine Fri, 16 Feb 2018 06:32:00 ESTnews437985085A new method for detecting levels of an important amino acidA team from the Faculty of Chemistry of MSU and colleagues have suggested a new method for determining levels of cysteine, an amino acid used in many drugs, with the help of gold nanoparticles. Unlike current methods, it does not require complex reactions or expensive equipment. An article with the results of the study was published in Sensors and Actuators B.https://phys.org/news/2018-02-method-important-amino-acid.html
Nanomaterials Fri, 16 Feb 2018 06:07:56 ESTnews437983666Scientists develop biocompatible anti-burn nanofibers that act as 'living bandages'A group of NUST MISIS's young scientists has presented a new therapeutic material based on nanofibers made of polycaprolactone modified with a thin-film antibacterial composition and plasma components of human blood. Biodegradable bandages made from these fibers will accelerate the growth of tissue cells twice as quickly, contributing to the normal regeneration of damaged tissues, as well as preventing the formation of scars in cases of severe burns.https://phys.org/news/2018-02-scientists-biocompatible-anti-burn-nanofibers-bandages.html
Bio & Medicine Fri, 16 Feb 2018 05:20:15 ESTnews437980806Nanoparticles act as surgical blades for improved dental surgeryCurrently, more than 80 nanotechnologies have been approved for a variety of medical applications, from treating cancer to bioimaging to tissue remodeling.https://phys.org/news/2018-02-nanoparticles-surgical-blades-dental-surgery.html
Bio & Medicine Thu, 15 Feb 2018 09:30:01 ESTnews437890484Squeezing into the best shapeUntil now, producing liquids that can be shaped and reshaped on demand hasn't been possible. Scientists discovered a simple way to form stabilized droplets in a variety of structures. Tightly packed nanoparticle-polymer assemblies at droplet surfaces were squeezed into desired shapes assemblies with an electric field. This new approach is a simple route to form droplets of one liquid phase in another liquid. This could lead to the continuous production of discrete, responsive, and reconfigurable all-liquid systems.https://phys.org/news/2018-02-squeezing-into-the-best-shape.html
Nanophysics Thu, 15 Feb 2018 09:14:03 ESTnews437908434Researchers devise a new, inexpensive way to fabricate microneedlesGetting an injection at the doctor's office is never a fun thing, but a new approach is on the horizon, using what are called microneedles, arrays of tiny needles that deliver medication through the skin without causing pain. But fabricating microneedles is costly, requiring cleanrooms and expensive equipment.https://phys.org/news/2018-02-inexpensive-fabricate-microneedles.html
Nanophysics Thu, 15 Feb 2018 09:07:22 ESTnews437908032Tiny membrane makes Sydney Harbour 'drinkable'Sydney's iconic harbour has played a starring role in the development of new CSIRO technology that could save lives around the world.https://phys.org/news/2018-02-tiny-membrane-sydney-harbour-drinkable.html
Nanomaterials Thu, 15 Feb 2018 01:57:54 ESTnews437882249Cells 'walk' on liquids a bit like geckosResearchers at Queen Mary University of London have discovered that cells can 'walk' on liquids a bit like the way geckos stick to other surfaces.https://phys.org/news/2018-02-cells-liquids-bit-geckos.html
Nanomaterials Wed, 14 Feb 2018 12:38:59 ESTnews437834300Researchers create predictable patterns from unpredictable carbon nanotubesIntegrating nanoscale fibers such as carbon nanotubes (CNTs) into commercial applications, from coatings for aircraft wings to heat sinks for mobile computing, requires them to be produced in large scale and at low cost. Chemical vapor deposition (CVD) is a promising approach to manufacture CNTs in the needed scales, but it produces CNTs that are too sparse and compliant for most applications.https://phys.org/news/2018-02-patterns-unpredictable-carbon-nanotubes.html
Nanomaterials Wed, 14 Feb 2018 08:42:28 ESTnews437820126A single magnetic skyrmion detected at room temperature for the first timeA team of researchers from CNRS, Thales and the Université Paris-Saclay, all in France has for the first time detected a single skyrmion at room temperature. In their paper published in the journal Nature Nanotechnology, the group describes their efforts, what they achieved and future avenues of research efforts.https://phys.org/news/2018-02-magnetic-skyrmion-room-temperature.html
Nanophysics Wed, 14 Feb 2018 08:30:01 ESTnews437813455Micromotors made easyResearchers of the ICN2 Nanobioelectronics and Biosensors Group led by Prof. Arben Merkoçi have devised a simple manufacturing method for versatile graphene oxide-based micromotors. Requiring no special equipment, it can be used to produce a range of micromotors that can be further tuned for different purposes. Luis Baptista-Pires explains the process in the paper published in Small.https://phys.org/news/2018-02-micromotors-easy.html
Nanomaterials Wed, 14 Feb 2018 07:50:01 ESTnews437816412Scalable and cost-effective manufacturing of thin film devicesEngineers at Rutgers University-New Brunswick and Oregon State University are developing a new method of processing nanomaterials that could lead to faster and cheaper manufacturing of flexible thin film devices - from touch screens to window coatings, according to a new study.https://phys.org/news/2018-02-scalable-cost-effective-thin-devices.html
Nanomaterials Wed, 14 Feb 2018 02:32:48 ESTnews437797958Scientists create patterned graphene onto food, paper, cloth, cardboardRice University scientists who introduced laser-induced graphene (LIG) have enhanced their technique to produce what may become a new class of edible electronics.https://phys.org/news/2018-02-scientists-patterned-graphene-food-paper.html
Nanomaterials Tue, 13 Feb 2018 13:11:19 ESTnews437749868Claw-like nanowires filter bacteria from bloodA team of researchers from institutions across China has developed a new type of dialyser —one capable of capturing up to 97 percent of bacteria present in a blood sample. In their paper published in the journal Nature Communications, the group explains the origins of their device, how the filter was made and how well it worked during testing.https://phys.org/news/2018-02-claw-like-nanowires-filter-bacteria-blood.html
Bio & Medicine Tue, 13 Feb 2018 09:40:02 ESTnews437736411A synthetic cell that produces anti-cancer drugs within a tumorTechnion-Israel Institute of Technology researchers have successfully treated a cancerous tumor using a "nano-factory" – a synthetic cell that produces anti-cancer proteins within the tumor tissue. The research, which was published in Advanced Healthcare Materials, combines synthetic biology, to artificially produce proteins, and targeted drug delivery, to direct the synthetic cell to abnormal tissues.https://phys.org/news/2018-02-synthetic-cell-anti-cancer-drugs-tumor.html
Bio & Medicine Tue, 13 Feb 2018 06:34:42 ESTnews437726070Scalable two-dimensional materials advance future-gen electronicsSince the discovery of the remarkable properties of graphene, scientists have increasingly focused research on the many other two-dimensional materials possible, both those found in nature and concocted in the lab. However, growing high quality, crystalline 2-D materials at scale has proven a significant challenge.https://phys.org/news/2018-02-scalable-two-dimensional-materials-advance-future-gen.html
Nanomaterials Tue, 13 Feb 2018 06:33:46 ESTnews437726009Researchers create DNA wires 100 times more sensitive than other biosensorsScientists in Sweden today reported a nanoengineering innovation that offers hope for treatment of cancer, infections and other health problems – conductive wires of DNA enhanced with gold which could be used to electrically measure hundreds of biological processes simultaneously.https://phys.org/news/2018-02-dna-wires-sensitive-biosensors.html
Nanomaterials Tue, 13 Feb 2018 06:32:25 ESTnews437725935Using injectable self-assembled nanomaterials for sustained delivery of drugsBecause they can be programmed to travel the body and selectively target cancer and other sites of disease, nanometer-scale vehicles called nanocarriers can deliver higher concentrations of drugs to bombard specific areas of the body while minimizing systemic side effects. Nanocarriers can also deliver drugs and diagnostic agents that are typically not soluble in water or blood as well as significantly decrease the effective dosage.https://phys.org/news/2018-02-self-assembled-nanomaterials-sustained-delivery-drugs.html
Bio & Medicine Mon, 12 Feb 2018 14:28:31 ESTnews437668087Cancer-fighting nanorobots programmed to seek and destroy tumorsIn a major advancement in nanomedicine, Arizona State University (ASU) scientists, in collaboration with researchers from the National Center for Nanoscience and Technology (NCNST), of the Chinese Academy of Sciences, have successfully programmed nanorobots to shrink tumors by cutting off their blood supply.https://phys.org/news/2018-02-cancer-fighting-nanorobots-tumors.html
Bio & Medicine Mon, 12 Feb 2018 11:00:02 ESTnews437638261A method to reveal stresses that alter properties of a materialStresses and strains can drastically alter the properties of a material, and TU Wien has now developed a method to make these internal deformations visible.https://phys.org/news/2018-02-method-reveal-stresses-properties-material.html
Nanomaterials Mon, 12 Feb 2018 10:05:11 ESTnews437652299New process allows 3-D printing of nanoscale metal structuresFor the first time, it is possible to create complex nanoscale metal structures using 3-D printing, thanks to a new technique developed at Caltech.https://phys.org/news/2018-02-d-nanoscale-metal.html
Nanomaterials Mon, 12 Feb 2018 07:58:30 ESTnews437644704Microscopy breakthrough paves the way for atomically precise manufacturingA University of Texas at Dallas graduate student, his advisor and industry collaborators believe they have addressed a long-standing problem troubling scientists and engineers for more than 35 years: How to prevent the tip of a scanning tunneling microscope from crashing into the surface of a material during imaging or lithography.https://phys.org/news/2018-02-microscopy-breakthrough-paves-atomically-precise.html
Nanophysics Mon, 12 Feb 2018 07:49:04 ESTnews437644132Researchers have fabricated two types of trilayer graphene with different electrical propertiesResearchers in Japan have found a way to form two materials, each made of three layers of graphene. Each material's graphene is stacked differently and has unique electrical properties. Their work has implications for the development of novel electronic devices, such as photo sensors that convert light into electrical energy.https://phys.org/news/2018-02-fabricated-trilayer-graphene-electrical-properties.html
Nanomaterials Mon, 12 Feb 2018 05:47:54 ESTnews437636869Few-layer tellurium as a promising successor of black phosphorusTwo-dimensional (2-D) layered materials have received considerable attention for their potential applications since the experimental discovery of graphene. Theoretical two-dimensional elementary semiconductors promise superior features in terms of fabrication, purification and doping. Few-layer black phosphorus (BP) is the first 2-D mono-elementary semiconductor with high electronic carrier mobility, strong optical absorption, linear dichroism, and high tunability with external fields. However, the flawed air stability and difficulties in large scale fabrication are remaining issues that inhibit practical applications of few-layer BP. Thus, researchers seek possible alternatives that also allow low-cost, large-scale synthesis, and offer good environmental stability without sacrificing the advantages of BP.https://phys.org/news/2018-02-few-layer-tellurium-successor-black-phosphorus.html
Nanomaterials Mon, 12 Feb 2018 05:33:52 ESTnews437636021Synthesis of a water-soluble warped nanographene and its application for photo-induced cell deathGraphene and its nano-sized little sibling, nanographene, are well known for their remarkable photoelectronic properties. However, biomedical applications are hampered by the insolubility of the materials, especially in water. A Japanese team of scientists has now introduced substituted "warped nanographene," which is soluble in a broad range of solvents while maintaining its photophysical properties. In their publication in Angewandte Chemie, the authors also emphasize its photodynamic potential to selectively kill cells upon irradiation.https://phys.org/news/2018-02-synthesis-water-soluble-warped-nanographene-application.html
Nanomaterials Fri, 09 Feb 2018 10:26:12 ESTnews437394185Active delivery of Cas9-sgRNA complex in the cell by using ultrasound-propelled nanomotorsIn cancer research, the "Cas-9-sgRNA" complex is an effective genomic editing tool, but its delivery across the cell membrane to the target (tumor) genome has not yet been satisfactorily solved. American and Danish scientists have now developed an active nanomotor for the efficient transport, delivery, and release of this gene scissoring system. As detailed in their paper in the journal Angewandte Chemie, their nanovehicle is propelled towards its target by ultrasound.https://phys.org/news/2018-02-delivery-cas9-sgrna-complex-cell-ultrasound-propelled.html
Bio & Medicine Fri, 09 Feb 2018 09:56:42 ESTnews437392584Antibacterial applications of graphene oxidesBacterial infections are among the greatest threats to human health. However, due to the increasing spread of multidrug-resistant bacteria, the current antibiotic supply appears to be insufficient, thereby necessitating the exploration of novel antibacterial agents. Nano-antibacterial agents represent a new strategy for bacterial treatment. Compared with antibiotics, nano-antibacterial agents have two advantages: (1) broad-spectrum bactericidal effects against Gram-positive and Gram-negative bacteria and (2) long-lasting bactericidal effects due to their extraordinary stability. Significant differences exist in the antibacterial mechanisms between antibiotics and nano-antibacterial agents. Antibiotics can prevent bacterial growth by inhibiting the synthesis of target biomolecules in bacteria, including the cell wall, DNA and proteins. Nano-antibacterial agents kill bacteria through membrane destruction, oxidative stress response, and interactions with cytosolic molecules (lipids, proteins, DNA, etc.).https://phys.org/news/2018-02-antibacterial-applications-graphene-oxides.html
Nanomaterials Fri, 09 Feb 2018 07:06:29 ESTnews437382380Scientists observe nanowires as they growAt DESY's X-ray source PETRA III, scientists have followed the growth of tiny wires of gallium arsenide live. Their observations reveal exact details of the growth process responsible for the evolving shape and crystal structure of the crystalline nanowires. The findings also provide new approaches to tailoring nanowires with desired properties for specific applications. The scientists, headed by Philipp Schroth of the University of Siegen and the Karlsruhe Institute of Technology (KIT), published their findings in the journal Nano Letters. The semiconductor gallium arsenide (GaAs) is widely used in infrared remote controls, the high-frequency components of mobile phones and for converting electrical signals into light for fibre optical transmission, as well as in solar panels for deployment in spacecraft.https://phys.org/news/2018-02-scientists-nanowires.html
Nanophysics Fri, 09 Feb 2018 07:00:02 ESTnews437381991First hybrid nanotech device mimicking blood-brain barrierResearchers at IIT-Istituto Italiano di Tecnologia fabricated an artificial device reproducing a 1:1 scale model of the blood-brain barrier (BBB), the anatomical and functional structure that protects the central nervous system from external toxins, but which also screens drugs when they are injected intravenously. The device, which is a combination of artificial and biological components, is fundamental for studying new therapeutic strategies to overcome blood-brain barrier and treat brain conditions such as tumors.https://phys.org/news/2018-02-hybrid-nanotech-device-mimicking-blood-brain.html
Bio & Medicine Fri, 09 Feb 2018 06:59:31 ESTnews437381957